Window bolt



June 14, 1932.

W. ,A. CHARLESTR EAM WINDOW BOLT Filed Aug. 23, 1929 ATTORNEY Patented June 14, 1932 UNTED STATES WILLIAM A. CHARLESTREAM, OF EAGLE BRIDGE, NEW YGRK WINDOWBOLT.

Application led August 23, 19.29,. Serial No. `387,951.

My present invention has reference to a window fastener', designed for use 1n connection with window sashes that are notanfluenced by weights, and the primary object .3 of my invention is the provision of a fastening device which is of a screw type whereby the same can be turned in its casing to cause the head of the said screw to iixedly engage with the side of the window frame, for easily and quickly locking the sash in either its raised or lowered position.

further object is the provision of a device for this purpose in which the casing for the screw holding element is so constructed that the same cannot be accidentally removed from the opening` in the stile of the sash through which it is received, wherein the screw member or bolt has a headed end ho-llowed for the reception of a compressible element that is brought into direct contact with the side of the window frame when the bolt is screwed home and further wherein the bolt has an outer pivotally connected handle which by gravity will normally assume a i pendent position so that the same can be conveniently operated.

To the attainment of the forego-ing the invention consists in the improvement hereinafter described and definitely claimed.

In the drawing:

Figure l is a partial elevation of a window frame showing a sash therefor provided with the improvement, a portion of the said sash being in section.

:lo Figure 2 is a side elevation of the improvement.

Figure 3 is a substantially central longitudinal sectional view through the casing of the improvement and through a portion of the head of the screw bolt.

Figure 4 is an end view looking toward the nead of the bolt.

Figure 5 is a transverse sectional view approximately on the line 5-5 of Figure 2.

' 1 Figure 6 is a transverse sectional view approximately on the line 6 6 of Fig. 2.

In the drawing the numeral 1 designates a window frame and 2 a sash which is arranged :Eor sliding in the frame. The sash is not supported by the counter-balancing weights and while I 'have'ill-ustrated only vone of the :vertioalstiles of the sash, both of such stiles may ment.

The improvement necessarily comprises a casing 3 of tubular formation. The stile 4 of the window sash 2 is bored transversely to receive the'casing?) therethrough. 'The casing is of spring metal and is slitted both longitudinally and transversely at points along its sides and the metal bounded by these slits provide outwardly extended springfingers 5 which contact with the wall provided by the opening through which the casing is received and thereby hold the casing from accidental movement through said opening. 'In addition to this the outer end of the casi-ngfis pro` vided with substantially V--shaped Iribs 6 which are 'forced into the stile 4.

The casing is formed with an inwardly directed continuous thread or spiral rib 7 to be received -in a continuous groove 8 formed on the bolt member 9 of the improvement. The bolt member is of a greater length than the sleeve .and has one of its ends formed or liXed thereon a cup-shaped head 10. The cup-shaped head receives therein a compressible .disc 1l.

The inner end of the screw bolt 9 is bifurcated and receives therethrough the reduced end l2 of a handle 13. The handle member is, of course, pivoted, as at 14, in the bifurcated end of the screw bolt. Because of its weight the handle 18 will normally assume a pendent position that is, of course, when the slot in the end of the bolt 9 is vertically disposed. The handle is of a comparatively short length so that the same can be turned without contacting the glass in the frame of the sash 2. The bolt when turned will, of course, be moved longitudinally through the casing 3 so that the head thereof or rather the compressible element l1 carried by the said head will exert a frictional contact with the casing 1 and consequently hold the sash in either its raised or lowered positions.

The simplicity ofthe improvement and the advantages thereof will, it is thought, be understood so that further detailed description will not be required.

be equipped with jmy improve- Obviously the casing 3 may be rovided with any desired number of spring ngers 5, and in the preferred embodiment of my invention I employ four of such ngers which 5 are arranged rightangularly with respectto each other, the said fingers, of course, preventing the accidental removal of the casing incident to the vibration to which the Window sash is subjected, as Well as; holding the said El, casing always in one position. y

Having described the invention', I claim A Window fastener comprising a tubular casing adapted to be inserted in an opening formed in a Windon7 sash and having bent out if) portions to frictionally engage the Wall of the opening, a spiral rib formed on the inner Wall of the tubular casing, a bolt extending through the tubular casing having a spiral groove receiving the rib to cause endwise w movement of the bolt when .rotated and said bolt having one end bifurcated,`a head secured to the other end of the bolt and having a cup shaped face, a frictional disk in the cup shaped base to engage a Window frame, a

handle pivoted to the bifurcated end of the bolt to permit rotation of the bolt in either direction and normally occupying a depending position from said bolt and adaptedl to be extended into parallelism With the bolt when n desiring to remove the latter from the casing, and substantially V-shaped ribs formed on the tubular casing and terminating at one end thereof to be engaged by the head when in one position and adapted to be partially embedded in the Wall of the opening of the Window sash for cooperating With the bent out portions of the casing in preventing the latter from rotating Within the op'ening In testimony whereof I afHX my signature. ,zu VILLIAM A. CHARLESTREAM. 

